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PHYSICAL PROPERTIES OF PbO-ZnO-P2O5 GLASSES I. INFRARED AND RAMAN SPECTRA

J. Schwarz1, H. Tichá1,* , L. Tichýa2, R. Mertens3

Affiliation

  1. University of Pardubice, Faculty of Chemical Technology, 532 10 Pardubice, Czech Republic
  2. Joint Laboratory of Solid State Chemistry of the Institute of Macromolecular Chemistry of the Academy of Sciences of the Czech Republic
  3. RUCA, University of Antwerp, B-2020 Antwerp, Belgium

Abstract

Phosphate glasses of composition x PbO – 10 ZnO - (90-x) P2O5, 30 £ x(mol. %) £ 55 (series A); 50 PbO –x ZnO – (50-x) P2O5, 0 £ x(mol %) £ 20 (series B); and x PbO – (60 – x) ZnO - 40 P2O5, 0 £ x(mol %) £ 60 (series C), were investigated. Depending mainly on the PbO content in glasses, the density varies in the range 3.2 to 5.5 [g/cm3], the glass transition temperature lies in the region 270 – 394 °C. Both the Raman and infrared spectroscopy were used to study the considerable structural changes in the phosphate network induced by incorporation of PbO and ZnO into a glass network. Depending on the actual system, PbO behaves as a network modifier and/or network former, especially for higher content of PbO. ZnO in most of cases seems to prefer to interact with PO3-end groups. In the C-series of glasses the local minimum in the glass-transition temperature Tg(PbO) dependence, we speculate, could reflect some tendency of the system to a local nano-phase separation..

Keywords

Phosphate glasses, glass-transition temperature, infrared spectroscopy, Raman spectroscopy.

Submitted at: April 27, 2004
Accepted at: June 22, 2004

Citation

J. Schwarz, H. Tichá, L. Tichýa, R. Mertens, PHYSICAL PROPERTIES OF PbO-ZnO-P2O5 GLASSES I. INFRARED AND RAMAN SPECTRA, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 3, pp. 737-746 (2004)